919816 has 16 divisors (see below), whose sum is σ = 1800000. Its totient is φ = 439824.

The previous prime is 919811. The next prime is 919817. The reversal of 919816 is 618919.

It is a super-2 number, since 2×919816² = 1692122947712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (919811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316 + ... + 2683.

It is an arithmetic number, because the mean of its divisors is an integer number (112500).

2⁹¹⁹⁸¹⁶ is an apocalyptic number.

It is an amenable number.

919816 is a deficient number, since it is larger than the sum of its proper divisors (880184).

919816 is a wasteful number, since it uses less digits than its factorization.

919816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028 (or 5024 counting only the distinct ones).

The product of its digits is 3888, while the sum is 34.

The square root of 919816 is about 959.0703832358. The cubic root of 919816 is about 97.2523982641.

The spelling of 919816 in words is "nine hundred nineteen thousand, eight hundred sixteen".